﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Oop3
{
    public class Parent
    {
        public int A { get; set; }

        //嵌套类
        public class Nested
        {
            public int A { get; set; }
        }
    }
}
